Seiko Cal. 5656 - 309

The 5656-309 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5656 caliber with 17j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-1531da5fe3e4]

Also known as: Bullhead, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1980

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